Dental floss holder



FIG. 1 is a front elevation of a dental floss holder showing my new design;

FIG. 2 is a side elevation thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a cross-section taken on line 4--4 of FIG. 1;

FIG. 5 is a bottom plan view; and

FIG. 6 is a cross-section taken on line 6--6 of FIG. 1. 

The ornamental design for dental floss holder, as shown and described. 